A Note on the Clutch Size and Shape of Egg Sacs of Hynobius boulengeri from the Sobo-Katamuki Mountains, Kyushu, Japan (Urodela: Hynobiidae)

Kanto Nishikawa; Shin’ichi Sato; Masafumi Matsui

doi:10.3105/1345-5834(2008)27[29:ANOTCS]2.0.CO;2

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Kanto Nishikawa,^1,* Shin’ichi Sato,² Masafumi Matsui¹

¹1 Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Saky
²2 1–27 Uenogaoka, Oita, Oita 870–0835, Japan

^*Corresponding author. Tel: +81–75–753–6848; Fax: +81–75–753–2891; E-mail address: hynobius@zoo.zool.kyoto-u.ac.jp

Abstract

We report the clutch size and egg sac morphology of Hynobius boulengeri from the Sobo-Katamuki Mountains, Kyushu. A total of 11 clutches (mean clutch size=39.2), each in a pair of egg sacs, were found in a steep, rocky stream head at about 900 m asl. on 6 May 2000 and 5 May 2001. The morphology of the egg sac was unique, having a string-like shape without a distinct whiptail structure at the free end. The clutch size and egg sac shape of H. boulengeri were most similar to those of H. stejnegeri, which occurs parapatrically with H. boulengeri in Kyushu.

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Kanto Nishikawa, Shin’ichi Sato, and Masafumi Matsui "A Note on the Clutch Size and Shape of Egg Sacs of Hynobius boulengeri from the Sobo-Katamuki Mountains, Kyushu, Japan (Urodela: Hynobiidae)," Current Herpetology 27(1), 29-34, (1 June 2008). https://doi.org/10.3105/1345-5834(2008)27[29:ANOTCS]2.0.CO;2

Accepted: 1 March 2008; Published: 1 June 2008

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